6725521264 has 240 divisors, whose sum is σ = 17697367296. Its totient is φ = 2442316800.

The previous prime is 6725521237. The next prime is 6725521277. The reversal of 6725521264 is 4621255276.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8132019 + ... + 8132845.

Almost surely, 2^6725521264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6725521264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8848683648).

6725521264 is an abundant number, since it is smaller than the sum of its proper divisors (10971846032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6725521264 is a wasteful number, since it uses less digits than its factorization.

6725521264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 911 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 6725521264 is about 82009.2754753997. The cubic root of 6725521264 is about 1887.5942687827.

It can be divided in two parts, 67255212 and 64, that added together give a palindrome (67255276).

The spelling of 6725521264 in words is "six billion, seven hundred twenty-five million, five hundred twenty-one thousand, two hundred sixty-four".